Doubly heavy spin--1/2 baryon spectrum in QCD

TL;DR

This paper uses QCD sum rules to calculate the masses and residues of doubly heavy spin-1/2 baryons, providing theoretical predictions that can be compared with other models and experimental data.

Contribution

It introduces a comprehensive QCD sum rule approach with general interpolating currents for doubly heavy baryons, enhancing previous calculations with symmetric and anti-symmetric forms.

Findings

Calculated masses and residues of doubly heavy baryons.

Compared results with other theoretical predictions.

Provided a framework for future experimental verification.

Abstract

We calculate the mass and residue of the heavy spin--1/2 baryons containing two heavy b or c quarks in the framework of QCD sum rules. We use the most general form of the interpolating current in its symmetric and anti-symmetric forms with respect to the exchange of heavy quarks, to calculate the two-point correlation functions describing the baryons under consideration. A comparison of the obtained results with existing predictions from various approaches is also made.